NULL Pointer Dereference Affecting perf6.12-debuginfo package, versions <1:6.12.63-84.121.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.18% (9th percentile)

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  • Snyk IDSNYK-AMZN2023-PERF612DEBUGINFO-15319655
  • published19 Feb 2026
  • disclosed16 Dec 2025

Introduced: 16 Dec 2025

CVE-2025-68293  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 perf6.12-debuginfo to version 1:6.12.63-84.121.amzn2023 or higher.
This issue was patched in ALAS2023-2026-1430.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perf6.12-debuginfo package and not the perf6.12-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

mm/huge_memory: fix NULL pointer deference when splitting folio

Commit c010d47f107f ("mm: thp: split huge page to any lower order pages") introduced an early check on the folio's order via mapping->flags before proceeding with the split work.

This check introduced a bug: for shmem folios in the swap cache and truncated folios, the mapping pointer can be NULL. Accessing mapping->flags in this state leads directly to a NULL pointer dereference.

This commit fixes the issue by moving the check for mapping != NULL before any attempt to access mapping->flags.

CVSS Base Scores

version 3.1